Advertising sign



FIG. 1 is a perspective view of a advertising sign showing my new design, with the broken lines shown for illustrative purposes only and forming no part of the claimed design.

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, with the opposite side being a mirror image thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof.

The design is characterized by having a large essential flat area on both sides of the lure for receiving advertisements. 

The ornamental design for advertising sign, as shown and described. 